cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A296854 Expansion of e.g.f. sinh(x*tan(x/2)) (even powers only).

Table of values

n a(n)
0 0
1 1
2 1
3 18
4 227
5 4565
6 126648
7 4620805
8 213569269
9 12165013026
10 835868220455
11 68093897815361
12 6483538063860336
13 712877916658802713
14 89586864207214060057
15 12753583150716684461970
16 2040805972702652020364603
17 364567588100855831300341565

List of values

[0, 1, 1, 18, 227, 4565, 126648, 4620805, 213569269, 12165013026, 835868220455, 68093897815361, 6483538063860336, 712877916658802713, 89586864207214060057, 12753583150716684461970, 2040805972702652020364603, 364567588100855831300341565]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.